linux-phytec-fsl

drm/ttm: unexport ttm_bo_wait_unreserved

All legitimate users of this function outside ttm_bo.c are gone, now
it's only an implementation detail.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>